JP2019020322A - Deformation detector - Google Patents

Abstract

To provide a deformation detector that allows an easy confirmation by our eyes of deformations generated in structures or grounds.SOLUTION: The present invention relates to a deformation detector 1 for detecting a change of the positional relation between two regions. The deformation detector includes: a first body part 11, fixed to a first region C1; a second body part 12, fixed to a second region C2; and a detection unit 13, where a part of the first body part and a part of the second body part overlap with each other. The detection unit changes the display states according to the positional relation between the two regions.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a deformation detection device that detects a change in a positional relationship between two regions such as a displacement generated in a structure or a natural ground.

  As disclosed in Patent Document 1, it is known to arrange a device for measuring the behavior of the ground surface on a slope where landslide or slope failure is likely to occur. This Patent Document 1 discloses a method in which reflectors are installed at a plurality of locations on a slope where fluctuations are assumed, and the positions of these reflectors are measured by a high-precision electronic ranging / angle measuring instrument.

  On the other hand, Patent Document 2 discloses a light control sheet and a light control plate that can switch the display of the amount of incident light, patterns, and the like by changing the polarization state or phase state of transmitted light.

JP-A-5-71960 JP, 2006-224454, A

  However, in the method of measuring with the electronic ranging / angle measuring instrument disclosed in Patent Document 1, it cannot be confirmed that the deformation has occurred until measurement and analysis are performed, and countermeasures such as implementation of countermeasure work and evacuation are not possible. May be delayed.

  Therefore, an object of the present invention is to provide a deformation detection device that can easily visually confirm a deformation that has occurred in a structure or a natural ground.

  In order to achieve the above object, a deformation detection device of the present invention is a deformation detection device that detects a change in the positional relationship between two regions, and includes a first main body portion fixed to the first region, A second body portion fixed to the second region, and a detection portion in which a part of the first body portion overlaps a part of the second body portion, and the detection portion is between the two regions. The display state changes depending on the positional relationship.

  Here, the detection unit may include a fine adjustment unit that finely adjusts an overlapping state between the first main body and the second main body. Further, the detection unit may be provided with a stopper unit that limits fluctuations greater than a predetermined value.

  Furthermore, the detection unit may be configured such that the display state changes depending on the positional relationship in one direction within the overlapping plane. Further, the detection unit may be configured such that the display state changes depending on the positional relationship in any direction within the overlapping plane. And the said detection part can also be set as the structure from which a display state changes with the positional relationship of the direction outside an overlapping plane.

  In the deformation detection device of the present invention configured as described above, when the positional relationship changes between two regions sandwiching cracks or cracks, the display state of the detection unit changes from the initial state. For this reason, the deformation generated in the structure or ground can be easily confirmed visually without separately performing measurement such as surveying.

  Further, if the detection unit has fine adjustment means for finely adjusting the overlapping state of the first main body and the second main body, the initial display state can be easily set. Furthermore, even after the deformation is detected, it is possible to reset the operation by operating the fine adjustment means and detect the deformation again.

  In addition, if the detection unit has a stopper unit that restricts fluctuations greater than or equal to a predetermined value, it is possible to prevent the fluctuations from becoming too large and being in a state similar to the display state when the fluctuations are small. .

  With such a deformation detection device, it is possible to detect a change in the positional relationship in one direction, a plurality of in-plane directions, or an out-of-plane direction.

It is the perspective view which showed the state which installed the deformation | transformation detection apparatus of embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the structure of the deformation | transformation detection apparatus of embodiment of this invention, Comprising: (a) is the perspective view which showed the disassembled state, (b) is the perspective view which showed the state at the time of installation, (c) ) Is a perspective view showing a state at the time of detecting deformation. It is the figure which showed the slope in which the deformation | transformation detection apparatus of Example 1 was installed, Comprising: (a) is explanatory drawing when a crack generate | occur | produces in the slope lower part, (b) is a case where a crack occurs in the slope upper part. It is explanatory drawing. It is the perspective view which showed the state which installed the deformation | transformation detection apparatus of Example 1. FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the structure of the deformation | transformation detection apparatus of Example 1, Comprising: (a) is the perspective view which showed the disassembled state, (b) is the perspective view which showed the state at the time of installation, (c) is variable. It is the perspective view which showed the state at the time of state detection. It is a perspective view explaining the process of installing the deformation | transformation detection apparatus of Example 1. FIG. It is a figure explaining the structure of the deformation | transformation detection apparatus of Example 2, Comprising: (a) is the perspective view which showed the disassembled state, (b) is the perspective view which showed the state at the time of installation, (c) is change. It is the perspective view which showed the state at the time of state detection. It is a perspective view explaining the state which detected the displacement of another direction with the deformation | transformation detection apparatus of Example 2. FIG. It is a figure explaining the structure of the deformation | transformation detection apparatus of Example 3, Comprising: (a) is the perspective view which showed the disassembled state, (b) is the perspective view which showed the state at the time of installation, (c) is a change. It is the perspective view which showed the state at the time of state detection.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state in which the deformation detection device 1 of the present embodiment is installed in a concrete structure C. FIG.

  For example, the concrete structure C constructed of reinforced concrete, prestressed concrete, or the like may deteriorate due to the use environment or long-term use, and cracks C3 may occur.

  The crack C3 is not a problem as long as it has a narrow width such as a hair crack, but if the crack C3 progresses as the width increases, it may affect the function and life of the structure. Therefore, when the small crack C3 is found, the subsequent deformation can be easily detected by installing the deformation detection device 1. Here, the deformation detection target is not limited to the concrete structure C, and may be a masonry retaining wall or the like.

  And one area | region which pinched | interposed the crack C3 of the concrete structure C is made into the 1st area | region C1, and the other area | region is made into the 2nd area | region C2. The deformation detection device 1 according to the present embodiment includes a first main body portion 11 fixed to the first region C1, a second main body portion 12 fixed to the second region C2, and a part of the first main body portion 11. And a detection unit 13 in which a part of the second main body unit 12 overlaps.

  In the deformation detection device 1 described in the present embodiment, a change in the positional relationship in one direction is detected. Here, the progress of the width of the crack C3 is detected, and the deformation detector 1 is attached in a direction substantially orthogonal to the extending direction of the crack C3.

  Next, a detailed configuration of the deformation detection device 1 will be described with reference to FIG. The first main body 11 is formed in a substantially rectangular shape in plan view in which one direction is the longitudinal direction. The first main body 11 is made of, for example, glass or a transparent resin material.

  A hole 112 for fixing to the first region C1 of the concrete structure C by a fixing means such as a fixing screw 111 is formed in the vicinity of the longitudinal end of the first main body 11. In addition, slide grooves 113 and 113 for slidably guiding the second main body portion 12 are extended in the longitudinal direction on both side edges in the short direction.

  On the other hand, the 2nd main-body part 12 is also formed in planar view substantially rectangular shape by which one direction becomes a longitudinal direction. The 2nd main-body part 12 is formed, for example with glass or a transparent resin material.

  Further, a hole 122 for fixing to the second region C2 of the concrete structure C by a fixing means such as a fixing screw 121 is drilled in the vicinity of the longitudinal end of the second main body 12.

  A first pattern 131 that becomes the detection unit 13 by being superimposed on the second main body unit 12 is provided on the surface of the first main body unit 11. Here, the detection unit 13 is configured by superimposing the second pattern 132 provided on the second main body unit 12 on the first pattern 131.

  The detection unit 13 has a configuration in which the display state changes depending on the positional relationship between the first pattern 131 and the second pattern 132. In other words, the first pattern 131 and the second pattern 132 superimposed on the first pattern 131 are each provided with a pattern such as a band shape, a pattern, or a hole at a predetermined interval, such as a striped pattern with a spacing of 5 mm.

  Here, when the second pattern 132 is provided on a transparent material, as shown in FIG. 2B, if the patterns of the second pattern 132 and the first pattern 131 overlap, a striped pattern is displayed. It becomes a state.

  In short, when starting the detection of the crack C3, as shown in FIG. 1, the first main body 11 is arranged so as to cross the crack C3, and is fixed to the first region C1 with the fixing screw 111. Subsequently, the second main body portion 12 is inserted into the slide grooves 113, 113 of the first main body portion 11, and the second main body portion 12 is moved to the second region by the fixing screw 121 at a position where the display state of the detection portion 13 becomes a striped pattern. Fix to C2.

  Thereafter, the width of the crack C3 widens, and as shown in FIG. 2C, the second main body 12 slides 5 mm in the longitudinal direction, and the positional relationship between the second pattern 132 and the first pattern 131 changes. Then, the striped pattern of the first pattern 131 in the lower layer is inserted between the striped pattern of the second pattern 132 so that the entire display portion of the detection unit 13 is filled. That is, the display can be switched by changing the polarization state and the phase state of the transmitted light of the second pattern 132 and the first pattern 131 like a slide-type light control glass.

  Even if the displacement does not reach 5mm and the entire display is not filled, the display state changes if there is a displacement from the initial state. Displacement can also be measured by measuring the overlapping width of patterns with a scale or the like.

  The display state of the detection unit 13 as described above is merely an example, and characters and marks such as “danger” and “caution” may be displayed. In addition, even if the second main body portion and the first main body portion are made of an opaque or low light-transmitting material such as a metal plate, the first pattern and the second pattern are, for example, holes that are dotted in the form of dots. If so, different display states can be created depending on the positional relationship between the first pattern and the second pattern.

  Next, the operation of the deformation detection device 1 of the present embodiment will be described.

  The deformation detection device 1 according to the present embodiment configured as described above is configured such that when the positional relationship changes between the two regions (C1, C2) sandwiching the crack C3 of the concrete structure C, the detection unit 13 The display state changes from, for example, an initial stripe pattern to black.

  For this reason, it is possible to quickly and easily visually confirm the deformation of the crack C3 generated in the concrete structure C without separately performing measurement such as surveying.

  Moreover, since the display state of the detection unit 13 changes, even a person who does not have specialized knowledge can check the deformation. For example, by attaching a sign such as “Please contact me when the display state of the detection unit 13 of the deformation detection device 1 turns black”, it is possible to respond quickly to the deformation. become.

  Furthermore, since the change in the detection unit 13 is a change in the display state that can be visually confirmed, the change can be detected even in a place away from the place where the change detection device 1 is installed. Further, when the detection unit 13 is difficult to see from the administrator, it is possible to make the display state of the detection unit 13 easier to see by installing a mirror and reflecting it.

  Further, if the deformation detection device 1 detects only displacement in one direction, it is possible to perform detection that specifies only the displacement component in the direction in which the change is desired, such as the width of the crack C3.

  Hereinafter, a deformation detection device 2 of a form different from the deformation detection device 1 described in the above embodiment will be described with reference to FIGS. Note that the description of the same or equivalent parts as the contents described in the above embodiment will be described using the same terms or the same reference numerals.

  FIG. 3 is a diagram illustrating slopes S in which the deformation detection devices 2 according to the first embodiment are installed at a plurality of locations. The slope S is a slope where slope failure may occur, and the slope measurement system 3 is installed across a place where a crack may occur from the slope upper part toward the slope lower part.

  In this slope measuring system 3, the fixed pile 33 is installed in a place where the fluctuation of the upper part of the slope does not occur, and the moving pile 34 is installed in the place of change when the crack in the lower part of the slope is generated. They are connected by an invar line 31.

  One end of the invar wire 31 is fixed to the head of the fixed pile 33 and a weight 341 is attached to the other end so that a constant tension acts on the invar wire 31 and is suspended from the head of the movable pile 34. deep. By adopting such a connection structure, even if the position of the movable pile 34 moves, the invar line 31 is only drawn out, and the position of the invar line 31 to which the first main body portion 21 to be described later is fixed does not change. become.

  In short, the side where the fixed pile 33 is installed is the first region S1 across the cracked portion (S3, S4), and is fixed to the first region S1 by being fixed to the invar wire 31. On the other hand, the side where the movable pile 34 is installed is the second region S2.

  And between the fixed pile 33 and the movable pile 34, a plurality of wooden piles 32,... Are installed at intervals along the invar line 31 so that a deformed occurrence section can be detected. The deformation detection device 2 of the first embodiment is used to detect the deformation at the position of the wooden pile 32. In addition, when the deformation | transformation detection may be one place, only the fixed pile 33 and the movement pile 34 can be installed, and the deformation | transformation detection apparatus 2 can also be attached to the head of the movement pile 34. FIG.

  In FIG. 4, the state which attached the deformation | transformation detection apparatus 2 to the head of the wooden pile 32 was shown. As illustrated in FIG. 5, the deformation detection device 2 includes a rectangular plate-shaped first main body portion 21, a rectangular plate-shaped second main body portion 22 longer than the first main body portion 21, and a second main body portion 22. And a detection unit 23 in which a part of the first body part 21 and a part of the second body part 22 overlap each other.

  As shown in FIG. 5A, the first main body portion 21 is suspended from the invar line 31 connected to the first region S1. In the center of the first main body 21, a striped pattern that becomes the first pattern 231 is provided. Here, let the both ends of the 1st main-body part 21 in the longitudinal direction be the edge parts 211 and 211.

  The second main body portion 22 is provided with a striped pattern to be the second pattern 232 in the center, and stopper portions 27 and 27 protruding upward at both ends in the longitudinal direction.

  A fixing screw 25 for fixing to the wooden pile 32 is attached to the center of the bottom surface of the housing case 24. Guide grooves 241 and 241 are extended in the longitudinal direction on both side edges of the storage case 24 in the short direction.

  The second main body 22 is slidably fitted into the guide grooves 241 and 241 of the housing case 24. In short, the second main body 22 is attached to the wooden pile 32 side together with the housing case 24, but the relative positional relationship between the second main body 22 and the housing case 24 in the longitudinal direction is the second main body 22. Fine adjustment can be made by sliding the.

  Specifically, as shown in FIG. 6, the housing case 24 is placed on the upper end surface of the wooden pile 32, and the housing case 24 is fixed to the head of the wooden pile 32 by screwing the fixing screw 25.

  At this time, the first main body portion 21 fixed to the invar wire 31 is disposed above the housing case 24. Therefore, the second main body portion 22 housed in the housing case 24 is slid and the first pattern 231 and the second pattern 232 are aligned so that the detection unit 23 is in the initial display state.

  When the detection unit 23 is in the initial display state due to the alignment, the adjustment screw 261 is screwed into the hole 262 penetrating toward the inner space drilled in the side wall of the housing case 24. When the tip of the adjustment screw 261 hits the side surface of the second main body 22, the position of the second main body 22 can be fixed with respect to the housing case 24. That is, the fine adjustment means 26 is configured by the adjustment screw 261 and the hole 262 drilled in the housing case 24.

  Here, when the second pattern 232 is provided on a transparent material, the pattern of the second pattern 232 and the first pattern 231 overlap with each other as shown in FIG. .

  And when a crack location (S3, S4) occurs in the slope S and the wooden pile 32 moves, as shown in FIG.5 (c), the 2nd main-body part 22 moves to a longitudinal direction with the storage case 24, The positional relationship between the second pattern 232 and the first pattern 231 changes.

  The change in the positional relationship between the second pattern 232 and the first pattern 231 is that the stripe pattern of the lower second pattern 232 is inserted between the stripe patterns of the first pattern 231. It is possible to detect the deformation visually by displaying a state where the entire surface is filled.

  However, when the deformation becomes larger than this, the patterns of the second pattern 232 and the first pattern 231 again overlap, resulting in the same striped display state as the initial state.

  Therefore, when the display state is such that the entire surface of the detection unit 23 is filled, the end portion 211 of the first main body portion 21 comes into contact with the stopper portion 27 of the second main body portion 22, and the second portion is further exceeded. The relative displacement between the pattern 232 and the first pattern 231 is prevented from occurring. In short, the display state is prevented from returning by providing the stopper portion 27 that restricts fluctuations of a predetermined value or more.

  FIG. 3 is a diagram for explaining a display state of the detection unit 23 of the deformation detection device 2 due to a difference in the occurrence section of the deformation. FIG. 3A shows a case where a crack portion S3 has occurred in the lower portion of the slope. At this time, the display state of one deformation detection device 2 below the crack portion S3 is “black”, and the crack portion is shown. The display states of the two deformation detection devices 2 and 2 above S3 remain the “stripe pattern” in the initial state. That is, since the first main body portion 21 fixed to the invar wire 31 does not move even if a crack occurs, only the second main body portion 22 fixed to the wooden pile 32 below the crack location S3 that moves due to the crack is displaced. Then, the display of the detection unit 23 becomes “black” (see FIG. 6).

  On the other hand, FIG. 3 (b) shows a case where a crack portion S4 has occurred in the upper part of the slope. At this time, the display states of all the deformation detection devices 2, 2, 2 at the three locations below the crack portion S4 are shown. It becomes “black”.

  As described above, by installing a plurality of deformation detection devices 2,... Between the fixed pile 33 and the moving pile 34, the deformation occurrence section on the slope S can be accurately and quickly arranged. To be able to grasp.

  In addition, if the detection unit 23 has fine adjustment means 26 for finely adjusting the overlapping state of the first main body 21 and the second main body 22, the initial display state can be easily set. Become.

  That is, it is difficult to accurately align the wooden pile 32 driven into the ground and the first main body portion 21 suspended from the upper invar wire 31 at a time. However, if the relative positional relationship between the first pattern 231 and the second pattern 232 is slightly deviated, the initial display state is changed, and there is a possibility of being misidentified even though no deformation has occurred.

  On the other hand, the overlapping state of the first main body portion 21 and the second main body portion 22 is finely adjusted only by sliding the second main body portion 22 in the housing case 24 fixed to the head of the wooden pile 32. If possible, the deformation detection device 2 can be efficiently installed. In addition, once a change is detected, resetting and then detecting the subsequent change can be easily performed by operating the fine adjustment means 26.

  Furthermore, if the detection unit 23 has a stopper unit 27 that restricts fluctuations of a predetermined value or more, the fluctuations are excessively large, and the display state is the same as the display state when the fluctuations are small. You can prevent it from being missed.

  Other configurations and operational effects of the first embodiment are substantially the same as those of the above-described embodiment and other embodiments, and thus description thereof is omitted.

  Hereinafter, the deformation detection device 4 in a form different from the deformation detection devices 1 and 2 described in the embodiment and Example 1 will be described with reference to FIGS. Note that the description of the same or equivalent parts as those described in the above embodiment mode or other example 1 will be described using the same terms or the same reference numerals.

  In the embodiment and the first embodiment, the change in the positional relationship in one direction within the plane where the first main body portion 11 (21) and the second main body portion 12 (22) overlap is detected. Then, the deformation | transformation detection apparatus 4 which can detect the change of the positional relationship of several directions in a surface is demonstrated.

  As shown in FIG. 7, the deformation detection device 4 includes a first main body 41, a second main body 42 provided with a second pattern 432 wider than the first pattern 431 of the first main body 41, The first pattern 431 of the first main body 41 and the detection unit 43 in which the second pattern 432 of the second main body 42 overlaps are mainly configured.

  The first main body 41 has a first pattern 431 that is substantially square in plan view, a wide end 411 that is fixed to the first region, and a narrower connection that connects the first pattern 431 and the end 411. Part 413.

  That is, the first main body 41 has a shape constricted at the position of the connecting portion 413. In addition, a hole 412 for screwing the fixing screw 414 is drilled in the end portion 411.

  On the other hand, the 2nd main-body part 42 is formed in a planar view rectangle. The second main body portion 42 is provided along a second pattern 432 having a substantially square shape in plan view, an end portion 421 provided integrally with the second pattern 432 fixed to the second region, and an outer peripheral edge of the second pattern 432. It is comprised by the stopper wall 44 used as the stopper part made.

  A hole 422 for screwing the fixing screw 424 is drilled in the end portion 421. In addition, the stopper wall 44 is provided with an opening 423 for allowing the connecting portion 413 of the first main body portion 41 to pass therethrough.

  That is, the stopper wall 44 is formed in a substantially C shape in a plan view, and the first direction walls 441 and 441 orthogonal to the longitudinal direction of the deformation detection device 4 (the direction in which the end portions 411 and 421 face each other) and the first direction walls 441 and 441 orthogonal thereto. Bidirectional walls 442 and 442 are provided.

  The length of the connecting portion 413 is formed such that the first pattern 431 can contact the first direction wall 441 facing the opening 423. On the other hand, the gap between the opening 423 and the connecting portion 413 is set to a width that allows the first pattern 431 to contact the second direction wall 442.

  With the deformation detection device 4 configured in this way, it is possible to detect changes in the positional relationship in at least two directions within the surface. FIG. 7B shows an initial display state of a checkered pattern of the detection unit 43 in which the first pattern 431 is arranged at the center of the second pattern 432.

  And as shown in FIG.7 (c), if the displacement of the longitudinal direction (direction parallel to the 2nd direction wall 442) of the deformation | transformation detection apparatus 4 arises, the display state of the detection part 43 will change and black display will be carried out. It becomes. The movement in this direction stops at a position where the first pattern 431 contacts the first direction wall 441.

  On the other hand, as shown in FIG. 8, even when displacement in the short direction (direction parallel to the first direction wall 441) of the deformation detection device 4 occurs, the display state of the detection unit 43 changes to be black. Will be displayed. The movement in this direction stops at a position where the first pattern 431 contacts the second direction wall 442.

  Furthermore, even when the above-described two directions other than the two orthogonal directions are deformed, the display state of the detection unit 43 changes from the checkered pattern in the initial state, so that the deformation has occurred. Can be easily grasped.

  In addition, about the other structure and effect of Example 2, since it is substantially the same as the said embodiment or another Example, description is abbreviate | omitted.

  Hereinafter, a deformation detection device 5 of a form different from the deformation detection devices 1, 2, and 4 described in the embodiment and Examples 1 and 2 will be described with reference to FIG. Note that the description of the same or equivalent parts as the contents described in the embodiment or the other examples 1 and 2 will be described using the same terms or the same reference numerals.

  In the third embodiment, as with the deformation detection device 4 of the second embodiment, a deformation detection device 5 capable of detecting changes in the positional relationship in a plurality of directions within the surface will be described. The main difference between the two is the configuration of the stopper portion 54.

  As shown in FIGS. 9A and 9B, the deformation detection device 5 includes a first main body 51 and a second pattern 532 wider than the first pattern 531 of the first main body 51. The main body 52 and the detection unit 53 in which the first pattern 531 of the first main body 51 and the second pattern 532 of the second main body 52 overlap each other are mainly configured.

  The first main body 51 is formed in a rectangular shape in plan view. The first main body portion 52 includes a first pattern 531 having a substantially square shape in plan view, an end portion 511 fixed to the first region, and a connecting portion 513 that connects the first pattern 531 and the end portion 511. . Further, a hole 512 for screwing the fixing screw 514 is drilled in the end portion 511.

  On the other hand, the 2nd main-body part 52 is formed in a planar view rectangle. The second main body portion 52 includes a second pattern 532 having a substantially square shape in plan view, an end portion 521 provided integrally with the second pattern 432 fixed to the second region, and a stopper portion 54. Here, a hole 522 for screwing the fixing screw 524 is drilled in the end 521.

  The stopper portion 54 includes a columnar protrusion portion 541 that protrudes upward in the center of the second pattern 532 and a circular hole portion 542 that is circularly perforated in the center of the first pattern 531.

  With the deformation detection device 5 configured in this way, it is possible to detect any change in the positional relationship in any direction within the surface. FIG. 9B shows an initial display state of a checkered pattern of the detection unit 53 in which the first pattern 531 is arranged at the center of the second pattern 532.

  Then, as shown in FIG. 9C, for example, when the deformation detection device 5 is displaced in the longitudinal direction (direction in which the end portions 511 and 521 are separated), the display state of the detection unit 53 is changed to be black. Will be displayed. The movement in this direction stops at the position where the inner surface of the circular hole 542 contacts the protrusion 541.

  In other words, the deformation detection device 5 detects the deformation by changing the display state of the detection unit 53 regardless of the displacement in any direction within the plane where the first main body 51 and the second main body 52 overlap. The Then, the relative movement stops at the position where the inner side surface of the circular hole 542 contacts the protrusion 541.

  In this way, by providing the stopper portion 54 having a simple configuration of the projection portion 541 and the circular hole portion 542, no matter which direction the detection unit 53 attempts to fluctuate more than a predetermined value in any direction in the plane, a more The relative displacement is limited, and it is possible to prevent the deformation from being missed.

  In addition, about the other structure and effect of Example 3, since it is substantially the same as that of the said embodiment or another Example, description is abbreviate | omitted.

  The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to the embodiment and the example, and the design change is within a range not departing from the gist of the present invention. Are included in the present invention.

  For example, in the embodiments and examples described above, a case where a change in the positional relationship in a plane where a part of the first main body part and a part of the second main body part overlap is detected by a change in the display state of the detection part will be described. However, the present invention is not limited to this. For example, when a detection unit is provided in which a part of the first main body part and a part of the second main body part are overlapped, the second main body part is inclined with respect to the first main body part, resulting in an out-of-plane displacement. Even so, since the display state of the detection unit changes, it is possible to detect a deformation such as an inclination.

C Concrete structure C1 first area (first area)
C2 second region (second region)
DESCRIPTION OF SYMBOLS 1 Deformation detection apparatus 11 1st main-body part 12 2nd main-body part 13 Detection part S Slope S1 1st area | region (1st area | region)
S2 Second region (second region)
2 Deformation detection device 21 First main body portion 22 Second main body portion 23 Detection portion 26 Fine adjustment means 27 Stopper portion 4 Deformation detection device 41 First main body portion 42 Second main body portion 43 Detection portion 44 Stopper wall (stopper portion)
5 Deformation Detection Device 51 First Main Body 52 Second Main Body 53 Detection Unit 54 Stopper

Claims (6)

A deformation detection device that detects a change in the positional relationship between two regions,
A first body portion fixed to the first region;
A second body portion fixed to the second region;
A detection unit in which a part of the first body part and a part of the second body part overlap,
The detection unit is characterized in that the display state changes depending on the positional relationship between two regions.   The deformation detection apparatus according to claim 1, wherein the detection unit includes fine adjustment means for finely adjusting an overlapping state between the first main body and the second main body.   The deformation detection apparatus according to claim 1, wherein the detection unit includes a stopper unit that restricts fluctuations of a predetermined value or more.   4. The deformation detection device according to claim 1, wherein a display state of the detection unit changes depending on a positional relationship in one direction within the overlapping plane. 5.   The deformation detection device according to any one of claims 1 to 3, wherein the detection unit changes a display state depending on a positional relationship in any direction within the overlapping planes.   The deformation detection device according to claim 1, wherein a display state of the detection unit changes depending on a positional relationship in a direction outside the overlapping plane.